EFFECT OF OIL COMPOSITION ON PHYSICAL-PROPERTIES AND SPREAD WIDTH OF POLYESTER MULTIFILAMENT FOR SPINNING A COMPOSITE YARN

This study examines the effect of oil composition (including the anti- static agent - alkyl ether sulfate) on the physical properties and spr ead width of polyester multifilament for spinning a composite yam. The results show that the solid content and viscosity of a special oil ar e slightly lower than normal oil, which reduces the stickiness of the spreading multifilament. Also, the coefficient of kinetic friction mu( k) and electrical conductivity of oiled polyester multifilaments are h igher than normal oil in order to conduct and store charges, and to di vide easily and spread widely to maintain good spreading performance. The content of the anti-static agent is the most important component o f a special oil. For example, the amount of alkyl ether sulfate (RO(CH 2CH2O)(n)SO3Na) should be 14% to reduce electrical resistance, and inc rease spreading performance. Furthermore, the number n of oxyethylene groups(CH2CH2O) on alkyl ether sulfate is 2 or 3 in order to maintain a lower electrical resistance and wider spread width.